Reversible valve



R. F. MAXWELL.`

REVERSIBLE VALVE.

APPLxcATloN FILED APR. 8. 192|. Pallted Jall- 31,

2 SHEETS-SHEE l.

R. F. MAXWELL. REVERSIBLE VALVE.

APPLICATION FILED APR. 8, I92I.

" 2 SHEETS-SHEET 2.

R71* Maxwell Patented Jan. 31, 1922.

' RAYMOND F. MAXWELL, or LONG BEACH, CALIFRNIA.- i

REVERSIBLEl VALVE.

spciiiationoftettersrafnt. Patented Jan. '31", 1922,y

Application inea Aprile, 192i. s eriai Nq. 459,781..

To all whomz't mcg/ concern i Be it known that LVRAYMQND F. MAXn WELL, a citizen vof the United States,residr. ing at Long Beach, in the county. of laos. Angeles and State of California, h aVe1n--` vented certain new andv useful. Improve;- ments in Reversible Valvesy of which the following is aspecification.

This invention relates to reversible suc. vtion valves and more particularly to that Vtype of valve adapted to be attached to rected to the construction of: a novel and im# vproved reversible suction Valve capable ofr pumps of the rotary, centrifugal. or plunger type whereby the pump mayjdraw .liquid from what was thev discharge pipe into the suction Vpipe andvice versa.

The primary obj ect of theinvention is di-V being connected to vvarious typesof pumps Vand which is also adapted toV be. used as aV Vreversing.valve. for steam .engines and Winches having Vpiston Valves tocontrol operationy of the same,y

Another andvery important-object of the` invention resides in a reversible` Valve' designed forinstallationin a liquidfuel supplysystem wherein the valve may be Vmanually .or auton'iaticallyL reversed to cut off lthe fuel supply `and permit the saine to-be with.- drawn from the systein A still further object ofthelinventionw-ill l be Vfound toresi'deinthe construction of a reversible Valve; which; may. be attached 'ini various positions to different types of pumpsv or steam engines .orinstalled in a liquid, Vfuel supply system, includingl provision whereby Y the Valyemay-be automatically.reversedby a steam cylindery .or byf hand to cut olf. the

fuel supply from {theiburners as in the .case

of` i'ire whenn one ofthe pipes'shouldbreak.4 j A still fuitherobjectjof the invention is the construction of a reversible suction valve capable of universal use in connection with.

various typesof pumpspand engines, conupressors` and. other machinery and whichrwi-ll` be extremely .simple in construction, c omprisingbut `yeryfew parts, .positive andieffif .cient in operatiomjadapted tobe easily '1natan extremelylow cost;`

stalled, 4 and cap able. of being. manufactured With these ob `ectsin ..vi ew and. others whichy Ywill be manifestt'andsuggested as vthe' purpose and nature ofmy invention are re- Vealedl in thek following lspecification and dra-wings, whereinfl have shown one of the preferred embodiments thereof, Y

system and yVice versa when communication. t0* permit "the Yliiuidftl,m1 *t be Pumpednt@ the Casing. throilghthe'pert Figure l is across section of the reversible Q suction valve showing oneVY position of the valve in' dotted lines.

` Fig. 2 isasection taken on the line 2**2. orinar.- .v Fig. 3 is a sectiony taken onthe line 3 3 Of'Fig'. l. i i' Fig. 4 is a diagrammaticiyiew 0fthe Valve, i f

cured to the casing byscrewl fastening ele- Fig. l ofthe drawing. y

Asu'ctionV port 10 near tl e bottoinof the casing, and a; discharge port ll slightly y aboye the center vthereof is proyided for .cone nection with the usual suctionpipeor conf,

duit l2 and a discharge. pipe 13 .each j of which areconnected by screw bolts 11i-tothe sides .of the casing whereby fuel for instance@V may be pumped into Yand fromthe casingin-- the `manner subsequently tobe described,

'lilllct port 15 connected- Atoa[supplypipe v16, a1ifl-an outlet port 17 .connected toa Vfeed f nip@ '18 are also provided inthe .spie-@Site sld@ of the` casina; .above .tlwiresieeti'elsucf tion port l0` and discharge port 1 1 heretofone referredtd The suction and .discharge *pipesY are of course directly connectedto thepump,

compressor or enginefas the Acase may be whereby liquid fuel for instance vmay be pumpedl from a source lof supplyJ to a feed the valve re-Y versed as will now appear.4

Within the casing 5 there is provided al Valve designated .20. substantially one. half i i the height ,of the casing and which has a central. passage 21 and an enlarged annular passage 22 in the side thereof so that when the VValve is vin the positionshown in full lines, 1,-theports`l51and-l0 will beini11 andont through portl? to'a burnerprg,

feedsystem, as is readily understood.

A' bracket 21a securedfto -tlie'.top.- o f the valve by fastening elements 22a' isconnected to ak Vertical operating rod 23.,Ev extending upwardly through thetop plate .(5 .and a, .i

packing gland 24 secured by fastening elcments 24Ea to the top plate7 whereby a fluid,

' various types pumps when it is desired to position the same to one side thereof for convenient connection with a fuel supply system or other conduits. From the above Y construction ofthe valve, it will be readily port 15 through thepassage 22.

i seen that when the same is reversed to the dotted line position shown in Fig. 1 for instance that the pump will` draw the liquid fuel through the port 17 into the casing, through the passage 21 and into the port 10 which becomes open upon movement of the valve'upwardly. The liquid will then passthrough the pump into the port 11 which then is in communication with the A s practical illustration of one manner in which Vthe reversible valve is adapted to be used,

particular attention 1s .directed to Fig. 4u

wherein the same is installed in a liquid fuel supply system, the operation of which will nowv .be described in detail.

The Adiagrammatic view shown in Figa consists of a fuel oil heater 30 connected to a boiler 31 by a conduit system 32 whereby theV liquid fuel is conducted to a burner 33 which is of the well known and usual construction. A discharge pipe 34; which connects the fuel oil heater with the casing 5 of the valve, and a suction pipe 35 which connects a fuel oil tank 36 with said casing constitutes a part of the system having al pump designated 3T and the usual engine 38 whereby the liquid fuel is adapted to be pumped through the fuel. oil heater and to the burner asis readily understood.

fusible link valve 39 is interposed in the steam pipe system connected to the boiler, which system is connected by a conduit 40 to a steam cylinder il connected to the casing 1f so desired the steam cylinder may be dispensed with but where it is desired to use vthe valve as a reversing valve., the upper terminal of the operating rod 23 is loosely connected by a lever 42 to the stem 43 of the steam cylinder so that if steam is vintroduced inthe said steam cylinder the valve may be reversed and the liquid fuel withdrawn from the fuel oil heater.

Assuming now that the reversible suction valve is insta led in the fuel supply system as shown r`in Fig. 2i so that it will work automatically, if one Yof the pipes in the supply system should. break and the fuel becomes ignited, the fusible link would. melt and thereby allow the steam under pressure to enter the steam cylinder and actuate the stem andreverse the valve from the full Vline to the dotted line position as shown in Fig. 1. |This operation would cause thc pump 37 to withdraw the liquid fuel from the oil heater 8O into the casing and permit the same to pass through the passage 2l into the port 10 and then through the ports ll, 15, to the' pipe 35 andv back again into the fuel oil tank. In this manner, it will be readily understood that as the liquid fuel is withdrawn from the system and backinto the fuel oil tank, the lire will go out from lack of fuel. `When the repairs have been made to the system, the valv-e may be reversed and of course fuel again pumped to the Vheater and conducted to the burners. In cases also where the suction pipe should become stopped up or clogged up with dirt for instance the reversing action of the valve would also force the obstruction out and the pump started again as before. I

In they accompanyingl drawingsjl have soV illustrated my invention embodied in Vone form by Way of example, and which in practice has been found to be highly satisfactory in obtaining the desired results. It will be obvious however that other embodiments may be adopted and that various changes in the details of construction maybe resorted to by those skilled yin the art without departing from the spirit and scope of the invention. It is furthermore understood that the invention is not necessarily limited or restricted to the precise lelements shown except in so far as such limitations are specified in the subjectmatterbeing claimed. Having shown and described myinvention what 1 now claim as new and desire to secure by Letters Patentof the U. S. is

1. A reversible valve of the class described comprising a casing,A having suction and discharge ports in the body thereof, a valve slidable within said casing and having a com# municating side passage' therein and auto- 4matic means Vfor reversing the valve where- 3. A reversible valve'of the class described comprising a cylindrical casing, open at A'its top and bottom, closure plates for said top and bottom, said casing having parallel suction and discharge ports openingV into the body of the casing, a valve having a central passage and an enlarged side passage slidable within said casing, and automatic lever operated means for reversing said valve whereby the suction ports become discharge ports and vice versa.

4. A reversible valve of the class described comprising a cylindrical casing open at its top and bottom, closureplatesrfor said top.

and bottom, said casing having parallel 'suction and discharge ports out of alignment with each other opening into the body of the casing, a valve having a central passage and an enlarged side passage slidable within said casing whereby to establish communication between the suction ports when the valve is in one position and communication between a discharge port yand-a suction port when the valve is in a reversed position and automaticV lever operating means or'reversing said valve.V

5. A reversible valve of the class described comprising a cylindrical casing open at its top and bottom, closure'plates for said top and bottom, said casing having oppositely disposed parallel suction'and discharge ports out of alignment with each other opening into the body of the casing, a valve having a central'passage and an enlarged side passage slidable Within the' casing for communication with the ports, a' bracket secured to the top of the valve, an operating rod connected to said bracket and automatic lever' operating means 'for actuating saidfrod to o reverse the position of the valve whereby the I suction ports become discharge ports and vice versa. Y f

6. A reversible valve of the class described comprising a cylindrical casing open at its top and bottom, closure'plates for said top and bottom, said casinghaving oppositely disposed, vparallel Vsuction and discharge ports-out of alignment with eachother and opening linto the body of the casing, and similar additional openings at right angles thereto, a valve having ajcentral passage and lan enlarged side passage slidable within the RAYMOND F. MAXWELL. 

